Top Definition
Stands for Fat Girl Waiting to Happen. When a girl is pretty but starting to put on weight that you know will never come back off.
Hey man, what do think of that Blonde girl?

Dude, she's a FGWTH.

What's that?

A Fat Girl Waiting To Happen.
#fat #girl #booty #plump #pretty
by pugsx3 August 11, 2010
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